【摘要】 研究了氯乙酸介质中,在 Tween80与溴化十八烷基吡啶混合表面活性剂存在下,锗与溴邻苯三酚红的高灵敏显色反应。反应的适宜酸度为 pH2.53～2.77。络合物的最大吸收在527nm.表观摩尔吸光系数1.01×10^?l.mol^-1·cm^-1。锗量在10～80ng/ml 遵守比耳定津.将诸萃取分离后再测定铅锌人工合成样中的微量锗,结果满意。更多还原

【Abstract】 A highly sensitive method for the spectro-photometric determination of germanium withbromopyrogallol red in the presence of tween80,octadecylpyridinium bromide andhydrogen peroxide has been developed.In mo-nochloroacetic medium（pH2.53～2.77）,Ge（Ⅳ）forms a red-purple complex with the abovereagents.The complex exhibits maximum absorp-tion at 527 nm.Beer’s law is obeyed for Ge（Ⅳ）inthe range of 10～80ng/ml with the molar absorp-tivity of 1.01×10⁶ l·mol^-1·cm^-1.The ef-fects of diverse ions on the determination ofGe（Ⅳ）are examined.After the extraction ofGe（Ⅳ）into carbon tetrachloride,the methodhas been used for the determination of mic-roamounts of Ge（Ⅳ）in lead-zinc solution withsatisfactory results.更多还原